<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    相对路径
    <link rel="stylesheet" href="../static/index.css">
    项目目录开始
    <link rel="stylesheet" href="/static/index.css">
    文件解析
    <link rel="stylesheet" href="{{ url_for('static',filename='index.css')}}">
</head>
<body>
    <h2>name:{{ name }}</h2>
</body>
</html>